alert http any any -> $HOME_NET any (msg:"ET MALWARE PolarEdge Webshell Installation attempt"; flow:established,to_server; http.uri; content:"/cgi-bin/"; startswith; pcre:"/^(?:config|config_mirror)\x2eexp\x3f/R"; http.header; content:"M|3a 20|H4s"; fast_pattern; content:"CMD|3a 20|"; reference:url,blog.sekoia.io/polaredge-unveiling-an-uncovered-iot-botnet/; classtype:trojan-activity; sid:2060440; rev:1; metadata:affected_product IoT, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_02_28, deployment Perimeter, deployment Internal, malware_family PolarEdge, performance_impact Low, confidence High, signature_severity Major, updated_at 2025_02_28, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)